Sewing-machine attachment



Aug. 6, 1929. F. P. MOORE 1,723,193

SEWING MACHTNE ATTACHMENT Filed July 27, 1928 2 Sheets-Sheet l Aug. 6,1929. F. P. MOORE 1,723,198

SEWING MACHINE ATTACHMENT Filed July 27, 1928 2 Sheets-Sheet 2 Inventor Ea 21 z 7? M0076 V Attorney Patented Aug. 6, 1929.

UNITED STATES FRANK .P. MOORE, OFEASI LOUIS, ILLINOIS.

snwmesmcnmn ATTACHMENT.

Application filed 11111727, 1928. iserialflo. 295,665.

The present invention relates to improven'ients in sewing machine attachments and has reference more particularly to a device for association with such machines as are used for sewing leather and like goods.

'One of the important objects of'the present invention is to provide a sewing machine at tachment, whereby the work may be stitched with angularly disposed cross stitches, as well as facilitating the formation of straight stitches when the attachmentis in an inoperative position.

A further object of the invention is to provide a sewing machine attachment of the above mentioned character which can bereadily and easily mounted on a sewing machine without necessitating any alteration of the parts with which the invention is tobe associated, the attachment at all times being positive and efficient in its operation.

Still a further obj ectis to provide a sewing machineattachmentof the above mentioned character which is simple in construction, inexpensive, strong and durable, and further well adapted to the ,purpose for which it is designed.

Other objects of. the invention willbecome apparent as the description ofthe invention proceeds and when takenin connection with the accompanying drawings.

In the accompanying drawings, forminga part of this application and wherein like reference characters designate like parts throughout the several views:

Figure 1 is a fragmentary front elevation of the head portion of a sewing machine of the conventional construction, showing the position of my attachment with respect to the cross bar carried by the vertically movable presser foot bar the attachment being-disclosed in its inoperative position.

Figure 2 is an end elevation of the head structure of the sewing I machine for more clearly illustrating the top of the'attachment.

Figure 3 is a top plan view showing the manner in which the attachment engages over the cross bar.

Figure 4 is a detail perspective viewof the attachment per se.

Figure 5 is a top plan view.

(Figure 6 is a side elevation.

Figure 7 is a bottom plan view.

Figure 8 is a view similar to Figure 1,-sho\ving the position of the attachment when in an operative position.

'1, in the manner also known in theart. .usualihorn orplatform of the sewing. machine .is shown atll7,i.and carried by this member is .the work plate8, thatislocated directly, below Figure'9 is a fragmentary plan view of two piecesof material arranged edge to edge and formed with a zigszag row of stitches such as may be produced by the attachment, oneof the pieces being formed with .a button-hole around which extends angularly disposed stitches, and

'Figure 10 is a similar view of apiece of materi al having a circular formation of angular stitches produced by means of the attachment.

In the drawings, wherein for the purpose :of illustration is shown the referred embodiment of my invention, t e numeral 1 designatesthe head of a sewing machine of ,a conventional, construct-ion, through which .is movable the vertically disposed needle slia ftQ, theneedle carried by the lower end of said shaft'being shown at 3. The needle3 isadapted to pass through theusnal resser foot 4, that issecured on the lower en of the vertically movable presser foot bar 5, and which extends throughthe head 1, and for the purpose of manually raisingand lowermg the presser foot barf), there is provided i theusual leverafi, atthe rear side of thehead The the needle?) and the presser footed.

At, the upper end the needleshaftQis 0p- ;eratively associated with the forward end, of .the walking beam .9 that is located above the arm 10 that supports the head .l-in ithe usual manner.

Extending upwardly from the top of the head at the front side thereof is thelrodflike element- 11 onwhich is disposed for restrupon the top of the head the plate 12and-these elements form "a part .of the thread tensioni-ng means. A cross bar 13 is secured .to the upper .end of the vertically movable presser foot bar-'5 for operation,therewithand this cross a central opening- 18 to accommodate the rod 11 and the outer edge of the base is flanged upwardly as shown.

An arm 19 extends upwardly from the outer edge or" the circular base 17 at substantially right angles thereto and this arm gradually increases in width from its lower to its upper end.

A laterally disposed finger engaging lip 20 is formed at the upper end of the arm at the inner side edge portion thereof and this lip is disposed at substantially right angles with respect to the arm, as more clearly shown in the drawings, with reference more particularly to Figure 5.

Extending laterally from the inner side edge of the arm 19 in a direction opposite to the finger engaging lip 20 is the finger 21, the same being preferably located at a point below the lip 20 and the outer end of this finger terminates in a downwardly directed hook 22.

The attachment is positioned on the rod 11 in the manner as clearly illustrated in the drawings, and when the cross bar 18 is engaged by the laterally disposed finger 21, in the manner as shown in Figures 1, 2, and 3, the attachment is then in an inoperative position. In making straight stitches, the lever 6 is lowered, whereby the presser foot bar 5 and the presser footl will be lowered.

lVhen it is desired to form Zig-Zag or cross stitches, the neck 20 is engaged and actuated to swing the finger 21, oil of the cross haul? and when the attachment is lowered, the member 17 will cooperate with the member 12 to tension the thread therebetween. The presser foot is not lowered when making the cross stitches. All that is necessary is to disengage the finger 21 from the cross bar and to lower the attachment that operates the sewing machine in the usual manner, so that two pieces of material may be stitched together in edge to edge relation by zig zag stitching, as shown at 23, in Figure 9.

Furthermore, the material may be worked freely on the plate 8, either forwardly or rearwardly or laterally so that a circular patch 24: may be seated within the opening formed in the material 25, by the zigzag stitching shown at 26, in Figure 10. A but ton-hole formed in a piece of material may have its edges reinforced by zig-zag stitching as shown at 2?, in Figure 9.

When it is desired to make straight stitches the hand lever 6 is lowered and the sewing machine operated in the ordinary manner.

a It will thus be seen from the foregoing description that I have provided a sewing machine attachment that will permit the formation of zig-zag or cross stitches as well strai ht stitches and the attachment is of such construction as to enable the same to be mounted upon a conventional sewing machine without necessitating any alteration of the parts or the machine with which the attachment cooperates.

An attachment of the above mentioned character will furthermore be positive and efiicient in its operation and due to its simplicity can be constructed and sold at a very low cost.

lVhile l have shown the preferred embodiment of my invention, it is to be understood that various changes in the size, shape and srra enient or". parts may be resorted to, without de arting from the spirit of the invention or the scope of the appended claims.

lVhat I claim is:

l. A sewing machine attachment comprising a threadtensioning base provided with an opening to accommodate the rod that e tends from the top of the head of the sewing machine, an arm extending upwardly from the outer edge portion of the base, a finger portion formed on the upper end the arm to facilitate raising and lowering, well the turnine' of the t. read tensioning and means ca ed by the arm for en nient over the cross bar that is carried t e upper erd of the vertically movable I esser foot I for maintaining the tension base men r in an inopera ive position.

machine attachment compristhrcad tensioning base provided with L ening to accommodate the rod that en- 5 ends from the top of the head of the sewing line, an arm extending upwardly from iter edge portion of the base, a finger ging portion formed on the upper end of *he arm to facilitate raising and lowering, as e l as the turning oi? the thread tensioning ase, d means carried the arn for enagem ntover the cross bar that is carried by the upper end of the vertically movable pressure foot bar for maintaining the tensioning base member in an inoperative position, said la. t mentioned means comprising a fimger extending laterally from the inter mediate portion of said arm.

3. A sewing machine attachment comprising a thread tensioning circular base adapted for disposition over a rod that projects upwardly from the top or" the head of a sewing machine, the thread being tensioned between said base and the top of the head when the base is in a lowered position, an arm extending upwardly from the outer edge portion of the base, a finger engaging lip extending lateral y from the upper portion of the arm, and a finger extending laterally from the intermediate portion of the armin the opposite cirection with respect to the lip for detachable engagement over the cross bar carried by theupper end of the vertically movable presser foot bar for holding the attach ment in an inoperative position.

In testimony whereof I aifix my signature.

FRANK P. MOORE. 

